Hi,
Yes i know someone with a 152E engine. My friend Dieter build a Group 4 RA40 Liftback. Look here:
http://www.rallye-celica.comDieter knows many thinks about the 152E engine. Also you can get the engine manual from him. He speaks english.
And for the 4T-GTE ask Mr. Dicks. He was many years by TTE and he haves some engines. Mr. Dicks find you here:
http://www.rallye-engine.de/index.php?o ... &Itemid=60At this time he build a new Group B Rallye Celica.
The project to build a RA/TA6 Rallye is very expensive.
Corradin in Italy sales one. Look here:
http://suchen.mobile.de/fahrzeuge/showD ... eNumber=18You need some pics for your motivation ?

regards
Arno
PS: I forget, i have a 3T-G inside. My car is only a Group 2 car.